This will also help you in avoiding other issues concerning your Nest. To fix ‘second Nest thermostat won’t connect to the app,’ it’s essential to follow a good troubleshooting guide. How to fix ‘Nest thermostat won’t connect to app’? So, make sure all the settings are accurately set up. Blocked Wi-Fi router settings by the firewall or parental controls may make your second Nest refuse to connect to the app.So, follow all the instructions mentioned within the app and include them with the device to avoid them. An inaccurate setup of your Nest thermostat may also create confusing problems, including connectivity problems.So, to get rid of them, the best option is to reboot your second Nest for efficient results. Glitches, errors, and bugs within your Nest may often create hurdles for you.So, to avoid it, never ignore any updates on your app. Another common cause is the outdated Nest app which creates unavoidable bugs that may interfere with the usage of your app.You should connect to a 2.4 GHz Wi-Fi band to avoid such an error. Poor or failed internet connection is the most common cause that prevents your second Nest from connecting to the app.Switch power back on to your thermostat.Conclusion What are the causes for Nest not connecting to app?īelow are the causes for Nest not connecting to app: Line up the faceplate with the baseplate and click it into place.ĥ.

Again, reach out to a professional installer if you have any questions about your specific wiring and thermostat setup.Ĥ. Note: The Nest Thermostat does not require a C-wire ( learn more about C-wires). Use a screwdriver to connect the baseplate to the wall with the included hardware.ģ. If the holes from the old thermostat don't line up with the new one, you'll need to make new ones.Ģ. Mark where you need to install the screws, using the Nest Thermostat's baseplate as a guide. Disconnect the wires from the thermostat's baseplate, then unscrew and remove the baseplate. Grab your phone and get a picture of the wiring for future reference.Ĥ. Now that the faceplate is gone, you should be able to see the thermostat wiring. Remove the old thermostat, starting with the faceplate.ģ. Turn off power to your thermostat and your heating and cooling system (consult a professional technician if you have any questions).Ģ. You've done the cursory app setup now it's time to remove your old thermostat:ġ.

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